Morris R C
Department of Psychology, University of Plymouth, Devon, UK.
Perception. 1993;22(7):869-76. doi: 10.1068/p220869.
Many psychological explanations have been advanced to explain left-right reversal in mirror images, but Gregory and Haig have each proposed a physical explanation for the reversal: the first is based upon the physical rotation used to present the surface of the object to the mirror, and the second on the classical optics of reflection. These physical explanations are considered together with an explanation based on object symmetry. The apparent reversal of directional coordinates (eg left and right) that occurs in the mirror images of most objects is distinguished from reversals achieved by physical or mental rotation. It is also distinguished from the object-image match that can be achieved by mental or physical rotation of some symmetrical objects. It is concluded that the left-right reversal is not specifically optical, but is determined by multiple factors, including object symmetry, the conventional and gravitational positioning of top and bottom and back and front, and our greater familiarity with right-left than with top-bottom or back-front reversals.
许多心理学解释被提出来用以解释镜像中的左右反转现象，但格雷戈里和黑格各自提出了一种关于这种反转的物理学解释：第一种基于用于将物体表面呈现给镜子的物理旋转，第二种基于经典的反射光学原理。这些物理学解释与基于物体对称性的解释一并被加以考量。大多数物体镜像中出现的方向坐标（如左和右）的明显反转，有别于通过物理或心理旋转实现的反转。它也有别于通过某些对称物体的心理或物理旋转所能实现的物体 - 图像匹配。研究得出的结论是，左右反转并非特定于光学现象，而是由多种因素决定的，这些因素包括物体对称性、上下以及前后的常规和重力定位，以及我们对左右反转比对上下或前后反转更为熟悉。
